Avtron Brushless Tachometer Upgrade Package

Avtron Brushless Tachometer Upgrade Package

Easy, Maintenance Free Upgrade

  • Direct Replacement for All 5BC42, 5BC46 & 5BC66 Tachogenerators
  • Severe Mill Duty
  • Fits Existing Bolt Patterns
  • No Drive Configuration Changes Required
  • No Brushes, No Maintenance
  • Better Speed Regulation
  • Self-Diagnostic LED and Alarm Output
  • -40C* to +120C* Operation
  • 1 Year No-Hassle Warranty
Outline Drawing

Replaces GE 5BC42/46/66 Analog Tachogenerators, NEMA 56C Face & Foot Mount

THE Avtron Brushless Upgrade Package with K661 and AV485 encoders replaces old, obsolete GE 5BC42, 5BC46 & 5BC66 analog tachogenerator models. It fits existing bolt patterns: both foot mount and existing motor flanges (NEMA 56C style). Other Avtron model encoders (AV850) are available to eliminate moving, wearing parts and motor flanges completely!

Using the Avtron update package, you will improve the output and speed control accuracy of your machine, while eliminating costly downtime.

Unlike low-quality converters, the Avtron solution is extremely linear and accurate, with no “gearshift” behaviors that can damage your product quality. The output is repeatable to 0.002%!   The K661 offers 50V/1000RPM, 100V/1000RPM and 200V/1000RPM selections to replace all common tach styles.

The brushless upgrade package is simple to install: mount the K661 converter in your drive cabinet, route a new encoder-to-drive shielded twisted pair cable, and mount the Avtron AV485 encoder. There are no changes required to your existing drives.

Keep your analog drives working for years to come, improve reliability, and increase your machine output. Select the Avtron Brushless Upgrade Package today!

Operating Power: 110VAC, 0.25A
Output Format: 50, 100, or 200V/1000RPM
Linearity: +/-0.002%
Offset: None
Reversing Error: Zero
Speed: 5000 RPM Max. (contact factory for higher speeds)
Temperature:
  • K661: 0°C to -60°C (for cabinet mount)
  • AV485: -40°C* to +120°C* (for machine mount)
  • AV850: -40°C to +100°C (for machine mount)
Encoder Electronics: Fully Encapsulated, IP67**
Vibration (encoder): 18g’s
Shock (encoder): 1 meter drop test
Weight (encoder + converter): 25lbs [11kg]

* AV485: -20C to +80C standard
** Connector options may reduce IP rating
  • SMARTach sensors find problems before they cause a failure
  • Digital technology supports future digital drive upgrades
  • Replacement and spare parts widely available & interchangeable with AV485, AV685, & AV850
  • Optional winder/ultra-low-speed control
  • Optional encoder air purge permitted for explosive atmosphere applications
  • Alternate AV850 encoder can be used on many DC motors to eliminate couplings, bearings, and all wearing parts
  • Optional shaft grounding or dual through-shaft for accessory mounting
  • Additional options to replace GE PY & Baldor/Reliance RE210 models
Industry General Food & Beverage Pulp & Paper Wood Products Wind Power Crane & Hoist Metals Mining Marine Oil & Gas

Light Mill Duty

AV20, AV25, AV32, AV6A, AV6M, HS25A, HS35A, HS6A, HS6M, K661,
                   

Mill Duty

AV32, HS35M, K661, M185, M3, M3(small), RAHS35M
                   

Heavy Mill Duty

AV115, AV125, AV45, AV5, AV56, AV56S, AV67, AV85, AV850, AV850Test, AVSK, Carlen Replacement, HS45, K661, M4, M4(small), XR115, XR12, XR125, XR45, XR4F, XR5, XR56, XR85, XR850, XR97, XRB1, XRB2
                   

Severe Mill Duty

AV12, AV30, AV485, AV5, AV685, Carlen Replacement, HS40, K661, M484, M6, M6C, M7, XR12, XR485, XR5, XR685, XR97, XRB1, XRB2,
                   
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In This Section

  • AN-DC

    AN-DC was an analog tachogenerator manufactured by General Electric, 8.5" NEMA FC face mount. It is now obsolete. It may be replaced by an Avtron AV850 encoder combined with a K661 converter solution.

  • Analog Tachogenerators

    Also known as DC tachogenerators, Analog Tachogenerators are small DC generators that output a voltage in proportion to speed. They cannot indicate position, only speed and direction of rotation. A common mounting style of analog tachogenerator was the General Electric BC42 and BC46 Series with NEMA 56C Foot or Face Mount, and the smaller 5PY flange mount unit. Analog tachogenerators can be replaced with modern digital encoders. Avtron offers a complete retrofit package using the existing flange adapter and coupling already on the motor and a Frequency to Voltage Converter like the Avtron K661, which resides in the drive cabinet.

  • BC42

    An analog tachogenerator manufactured by General Electric, part number 5BC42xxxxx, NEMA 56C face or foot mount, coupled. It is now obsolete. It may be replaced by an Avtron encoder combined with a K661 converter solution.

  • BC46

    An analog tachogenerator manufactured by General Electric, part number 5BC46xxxxx, NEMA 56C face or foot mount, coupled. It is now obsolete. It may be replaced by an Avtron encoder combined with a K661 converter solution.

  • BC66

    A heavy duty analog tachogenerator manufactured by General Electric, part number 5BC66xxxxx, NEMA 56C face or foot mount, coupled. It is now obsolete. It may be replaced by an Avtron encoder combined with a K661 converter solution.

  • DC Tachogenerators

    Also known as Analog Tachogenerators. Small DC generators that output a voltage in proportion to speed. They cannot indicate position, only speed and direction of rotation. A common mounting style of analog tachogenerator was the General Electric BC42 and BC46 Series with NEMA 56C Foot or Face Mount, and the smaller 5PY flange mount unit. Analog tachogenerators can be replaced with modern digital encoders. Avtron offers a complete retrofit package using the existing flange adapter and coupling already on the motor and a Frequency to Voltage Converter like the Avtron K661, which resides in the drive cabinet.

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